Ds language problem

I downloaded Mario and Sonic at the Beijing Olympics and ran it on my DS but it is in Japanese. I know it is a Japanese game, but several English speaking people have commented on it and said that it is brilliant. Can someone please help.

why dont you just download the english rom? its the same game except in english...

Is the English ROM: Mario and Sonic at the Olympic games, rather than: Mario and Sonic at the Beijing Olympics?

They're exactly the same just different game name.